[PD-dev] dynamic patching - is iemguts the way to go?

[Jamie Bullock]

This is possibly a bit more heavyweight solution than you’re looking for, but you might want to look into the Integra Framework: https://github.com/BirminghamConservatoire/integra-framework <https://github.com/BirminghamConservatoire/integra-framework>

It was specifically designed as module management layer to sit between libPd (which it wraps) and an application, e.g. JUCE. An Integra “module” is basically a collection of Pd patches with some metadata wrapped in a ZIP file.

Happy to answer any questions.

Cheers,

Jamie


> On 20 Aug 2019, at 09:18, Nick Porcaro <nick at ccrma.stanford.edu> wrote:
> 
> My setup is a JUCE app that uses libpd.  I load a patch that’s an effects chain,
> with each effect in it’s own abstraction that can be switch~’d to zero so it does not
> comsume processing when not in use.
> 
> The solution I have now is to rename the abstractions to reflect a new processing
> order and then I reload the patch.  This works, but it’s a hack.  What’d really be
> slick is if there was api in libpd for inspecting and editng a running patch.
> 
> The goal is to minimize glitches on reloading the patch.  We do a similar thing in 
> GeoShred http://www,moforte.com <http://www,moforte.com/> in the effects chain.  We use Faust for the signal processing
> in GeoShred.  There we essentially reorder a table of function pointers to accomplish the reordering.
> 
> - Nick
> 
> 
>> On Aug 20, 2019, at 3:47 AM, Nick Porcaro <nick at ccrma.Stanford.EDU <mailto:nick at ccrma.Stanford.EDU>> wrote:
>> 
>> Hey Folks,
>> 
>> It’s been a while since I’ve done any hard core work with Pd but that time has come again,
>> and I’m glad to be back on the scene!
>> 
>> In the project I’m working on I need to be able to reconfigure the processing order
>> of  DSP objects in a given patch on the fly:
>> 
>> For example, from this: 
>> 
>> [noise~]
>> [lop~]
>> [hip~]
>> [dac~’
>> 
>> To this: 
>> 
>> [noise~]
>> [hip~]
>> [lop~]
>> [dac~]
>> 
>> Of course this is a trivial example, but it’s not if you wanted to arbitrarily reorder
>> an effects chain with 30 objects in it.
>> 
>> I stumbled across this paper:
>> 
>> https://lac.linuxaudio.org/2009/cdm/Saturday/18_Zmoelnig/zmoelnig_pdreflection.pdf <https://lac.linuxaudio.org/2009/cdm/Saturday/18_Zmoelnig/zmoelnig_pdreflection.pdf>
>> 
>> and this GitHub repo https://github.com/iem-projects/pd-iemguts <https://github.com/iem-projects/pd-iemguts>
>> 
>> and it appears that iemguts might do what I need -
>> 
>> What do you all think?  
>> 
>> (I posted this to the patch~ section of the Pd forum as well, and there’s some discussion going on).
>> 
>> - Nick
>> 
>> 
>> 
>> 
>> 
>> 
>> 
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